基于标准距离端点数据重组的标定优化方法  

Calibration optimization method based on the reorganization of standard distance endpoint data

作　　者：陈雨婷 谢胜龙 邹伟 CHEN Yuting;XIE Shenglong;ZOU Wei(College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou 310018,China;National Institute of Metrology,Beijing 10029,China)

机构地区：[1]中国计量大学机电工程学院,浙江杭州310018 [2]中国计量科学研究院,北京100029

出　　处：《中国计量大学学报》2023年第3期357-363,共7页Journal of China University of Metrology

基　　金：国家自然科学基金重点项目(No.51935004);基本科研业务重点项目(No.AKYZDD2213)。

摘　　要：目的:提高多边测量系统参数的标定精度。方法:距离约束标定方法通过获取固定端点间长度作为标准距离,采用数学优化方法进行系统参数的标定。因干涉测距误差存在,标准距离两端固定点对应干涉测长中的误差导致标定的标准距离误差增加,影响了系统参数标定误差及系统测量误差。为此提出一种基于标准距离端点标定数据重组的标定优化方法,重新组合标定数据,以组合后的每组标定测长数据作为约束条件,进行迭代筛选得到标定数据的最优组。结果:仿真验证了标定方法的可行性,通过实验验证两种布局下采用重组优化标定后的测角误差区间分别为[-7″,6″]、[-11″,11″]。结论:该标定优化方法可以有效剔除受测距误差影响较大的标定数据,提高标定精度,且适用于不同测量布局。Aims:This paper aims to improve the calibration accuracy of multilateral measurement system parameters.Methods:The distance-constrained calibration method used the mathematical optimization method to calibrate the spatial relationship of multiple laser tracking interferometers by obtaining the length between the fixed endpoints.Due to the existence of interferometric ranging errors,the error in the interferometric length measurement corresponding to the fixed points at both ends of the standard distance led to the increase of calibrated standard distance errors,which affected the parameter calibration error and system measurement error.A calibration optimization method based on the standard distance was proposed;and the combined calibration data re-optimized.It took the combined calibration length of each group as the constraint condition to iteratively screen the optimal combination of the calibration data.Results:Simulation verified the feasibility of the calibration method.Through experiments,it was verified that the angular measurement error ranges for the two layouts using reorganization optimization calibration were[-7″,6″],[-11″,11″].Conclusions:The calibration optimization method can effectively eliminate calibration data that are greatly affected by ranging errors,can improve calibration accuracy,and is suitable for different measurement layouts.

关 键 词：大空间测量 多边法 标定方法 

分 类 号：TB92[一般工业技术—计量学]